try doing a stunt with your friends when your coach is not around then show her at practice and she'll see that your better at being the flyer instead of her daughter

Try to give her the benefit of the doubt. She may not know there is an issue, so talk to her and ask to fly in the next stunt progression your team works on. And even if she does treat you unfairly, being bitter won't fix the situation. Be the very best you can be in whatever position you are in (being a good base actually makes you a better flyer).
It sounds like you get to fly sometimes. Maybe the coach is trying to train more flyers (since you probably need more than one). Or maybe she is trying to highlight different skills in different stunts. In other words, she obviously can't use the same flyer for everything. I'm sure you don't expect that either, I'm just trying to put some perspective on things.
With that said, if she really is being biased, then that is bad for the whole squad. First, TALK to her. This is the most important. If you don't, then there's no chance to improve the situation, so be prepared to forget about it and be happy :-).
After that, if you still feel she is singling you out, it's time to get parents and then the athletic director involved. But ONLY after you've clearly communicated the issue to the coach yourself and have gotten no reasonable explanation.
I'm interested to hear how it works out. Also, is there another coach? If so, definitely talk to both/all.

Quit. =/
I wouldnt even put up with that

i have heard stories about favoritism. i interviewed the coach before i put my son on ANYONE's team. I recommend that approach. unfortutely, it didn't exactly work for me. I had to ensure some of regardless. fortunately, we only have this coach for a year. so, we are chalking it up to one of lifes lessons. if you can do that, perhaps that is a good approach, especially if the problem is rather short term.

i interviewed the coaches before i let ANYONE work with them. i recommend that approach first. unfortunately, it didn't as i would have liked for the football coach. we had to endure some favoratism nevertheless. my son's coach will change next year. consequently, my wife, dad and i decided that this would simply be a lesson of life--that things don't always go your way, and that life isn't fair all the time. if your situation is short term, perhaps that approach can work for you.

Never quit, get all the team mates to try to talk to the coach and maybe she will let you try out and give her no doubt the you couldnt do it.(:

If you are not learning, improving, and enjoying then let this be your last season and move on to another team. Cheer should be fun as well as progressive for an athlete.

My son and 2 nephews went through the same thing this season of football.They have been playing since they were 5 with some of the same boys,and are very talented.There were some new comers and it caused turmoil.Some of the parents and I confronted the parents and let them know if your child wants to play they have to earn it,and they feel there child can do better please take there places,and believe me it shut there mouths,quickly!!!!